Perhaps you should try some spelling variations:
information centers » information contents, information officers
oral communication » personal communication
technologien der » technologien des, technologie der, technologien fur
der information » insider information, sector information, labor information
20 development » 2 development, 2015 development, 2007 development
centers kwee » centuries kwee, centers case
costs 20 » costs 60, costs 2.3, costs 2.1

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technologien der information centers kwee oral communication costs 20 development 1 africa.*.